Seasonal distribution and migrations of Agrotis ipsilon (Hufnagel) (Lepidoptera, Noctuidae)

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Date
1975
Authors
Onyango O.P
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Abstract
The larva of the near-cosmopolitan noctuid moth Agrotis ipsilon (Hufnagel) (=A. ypsilon, Rhyacia ypsilon (Rott.), R. ypsilon (Warren), Scotia ipsilon (Rott.» is popularly known as the greasy cutworm in Asia and North America, the dark sword grass in Britain, and the black cutworm in Europe. The name 'cutworm' reflects its feeding habit of cutting off plant seedlings at the base of the stem, and the adjectives 'greasy' or 'black' describe its greasy, earthy-brown, blackish or grey-green appearance which is due to its black head, numerous dark tubercles, and dorsal longitudinal dark stripes and lateral pale ones. The greasy cutworm can be of very considerable economic importance, not only because of its prolific and often localized breeding but also because its nocturnal feeding habits often cause outbreaks to escape notice until a late stage.
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Bulletin, p. 5-26